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Gewählte Publikation:

Brodmann, J; Twele, R; Francke, W; Hölzler, G; Zhang, QH; Ayasse, M.
(2008): Orchids mimic green-leaf volatiles to attract prey-hunting wasps for pollination.
Curr Biol. 2008; 18(10):740-744 FullText FullText_BOKU

An outstanding feature of orchids is the diversity of their pollination systems [1]. Most remarkable are those species that employ chemical deceit for the attraction of pollinators [2]. The orchid Epipactis helleborine is a typical wasp flower, exhibiting physiological and morphological adaptations for the attraction of pollinating social wasps [3]. As noted by Darwin [1], this species is almost entirely overlooked by other potential pollinators, despite a large nectar reward. Therefore, the mechanism for the attraction of pollinating social wasps was something of a mystery. By using a combination of behavioral experiments, electrophysiological investigations, and chemical analyses, we demonstrate for the first time that the flowers of E. helleborine and E. purpurata emit green-leaf volatiles (GLVs), which are attractive to foragers of the social wasps Vespula germanica and V. vulgaris. GLVs, emitted by damaged plant tissues, are known to guide parasitic wasps to their hosts [4]. Several E. helleborine GLVs that induced response in the antennae of wasps were also emitted by cabbage leaves infested with caterpillars (Pieris brassicae), which are common prey items for wasps [5]. This is the first example in which GLVs have been implicated in chemical mimicry for the attraction of pollinating insects.
Autor*innen der BOKU Wien:
Hölzler Gerald
BOKU Gendermonitor:

Find related publications in this database (using NML MeSH Indexing)
Animals -
Appetitive Behavior - physiology
Brassica - metabolism
Flowers - physiology
Host-Parasite Interactions - physiology
Larva - parasitology
Moths - parasitology
Orchidaceae - physiology
Plant Leaves - metabolism
Pollination - physiology
Smell - physiology
Visual Perception - physiology
Wasps - physiology

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